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export default {
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async checkImgHttp(imgPath, type) {
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let res = await this.getImageInfo_PromiseFc(imgPath)
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let newPath = '';
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if (!res) {
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uni.hideLoading()
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switch (type) {
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case 'avatar':
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console.log('%cerr:海报头像图片错误: ' + imgPath, 'color:green;background:yellow');
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break;
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case 'bgImage':
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console.log('%cerr:海报背景图片错误: ' + imgPath, 'color:green;background:yellow');
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break;
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case 'wxCode':
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console.log('%cerr:海报微信二维码图片错误: ' + imgPath, 'color:green;background:yellow');
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break;
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case 'goodsImage':
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console.log('%cerr:海报商品图片错误: ' + imgPath, 'color:green;background:yellow');
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break;
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default:
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break;
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}
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} else {
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let pathArr = imgPath.split('://');
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// #ifdef H5
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let ishttps = 'https:' == window.location.protocol ? true : false;
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ishttps ? (pathArr[0] = 'https') : (pathArr[0] = 'http');
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// #endif
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// #ifdef MP-WEIXIN
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pathArr[0] = 'https'
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// #endif
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newPath = pathArr.join('://');
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}
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return newPath;
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},
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// 检测图片是否可用
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getImageInfo_PromiseFc(imgPath) {
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return new Promise((rs, rj) => {
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imgPath = this.checkMPUrl(imgPath);
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uni.getImageInfo({
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src: imgPath,
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success: res => {
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rs(1);
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},
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fail: err => {
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console.log(err)
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rs(0);
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}
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})
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});
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},
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// 微信头像
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checkMPUrl(url) {
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// #ifdef MP
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if (
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url.substring(0, 4) === 'http' &&
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url.substring(0, 5) !== 'https' &&
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url.substring(0, 12) !== 'http://store' &&
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url.substring(0, 10) !== 'http://tmp' &&
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url.substring(0, 10) !== 'http://usr'
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) {
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url = 'https' + url.substring(4, url.length);
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}
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// #endif
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return url;
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},
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/**
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* 相对比例
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* @param {Object} bgObj - 背景图片数据对象
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* @param {Number} num - 需要计算的绘制模块数值
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*/
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getScale(bgObj, num = 0) {
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return Number(bgObj.width * (num / bgObj.width).toFixed(2))
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},
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/**
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* 绘制序列
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* @param {Object} bgObj - 背景图片数据对象
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* @param {Array} drawArr - 绘制元素数组对象
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*/
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initDrawArray(bgObj, drawArr) {
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const that = this;
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let arr = []
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drawArr.forEach(item => {
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switch (item.type) {
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case 'text':
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arr.push({
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type: 'text',
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text: item.text, //文本
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size: that.getScale(bgObj, item.size) || 50, //大小
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color: item.color || 'black', //颜色
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alpha: item.alpha || 1, //透明度
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textAlign: item.textAlign || 'left', //文字x对齐方式: 'left'、'middle'、'right'
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textBaseline: item.textBaseline ||
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'middle', //文字y对齐方式: 'top'、'bottom'、'middle'、'normal'
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dx: that.getScale(bgObj, item.dx) || 0, //文字x轴位置
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dy: that.getScale(bgObj, item.dy + item.size) || 0, //文字y轴位置
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[item.lineFeed ? 'lineFeed' : '']: { //设置换行
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maxWidth: item.lineFeed?.maxWidth && that.getScale(bgObj, item.lineFeed
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.maxWidth) || bgObj
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.width, //最大宽度
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lineHeight: item.lineFeed?.lineHeight && that.getScale(bgObj, item
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.lineFeed.lineHeight) || 50, //行高
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lineNum: item.lineFeed?.lineNum || -1, // 最多行数，小于0为无限
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dx: item.lineFeed?.dx || -1, //非第一行文字位置，小于0为默认位置
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},
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infoCallBack: (textLength) => { //回调函数，返回文本信息
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if (item.isBgCenter) {
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return {
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dx: (bgObj.width - textLength) / 2,
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}
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}
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return {}
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},
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[item.lineThrough ? 'lineThrough' : '']: { // 设置删除线，默认为字体样式
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width: item.lineThrough?.width || item.size / 10,
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style: item.lineThrough?.style || item.color,
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alpha: item.lineThrough?.alpha || 1,
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cap: item.lineThrough?.cap || 'butt',
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},
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fontStyle: item.fontStyle || 'normal', // 设置字体，跟随系统默认
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fontVariant: item.fontVariant || 'normal',
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fontWeight: item.fontWeight || 'normal',
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fontFamily: item.fontFamily || 'sans-serif',
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})
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break;
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case 'qrcode':
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arr.push({
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type: 'qrcode',
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text: String(item.text || '') || '', // 生成内容
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size: Number(that.getScale(bgObj, item.size) || 0) || 200, // 二维码大小
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background: String(item.background || '') || '#ffffff', // 背景色
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foreground: String(item.foreground || '') || '#000000', // 前景色
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correctLevel: Number(item.correctLevel || 0) || 3, // 容错级别
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image: String(item.image || '') || '', // 二维码图标
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imageSize: Number(that.getScale(bgObj, item.imageSize) || 0) || 40, // 二维码图标大小
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dx: item.isBgCenter ? (bgObj.width - item.size) / 2 : Number(that.getScale(
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bgObj, item.dx) || 0) || 0,
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dy: Number(that.getScale(bgObj, item.dy) || 0) || 0, // y轴距离
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})
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break;
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case 'image':
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arr.push({
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type: 'image',
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url: this.checkImgHttp(item.url, item.name), // 网络图片路径
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dWidth: Number(that.getScale(bgObj, item.dWidth) || 0) || 100, //绘制图像的宽度，允许缩放
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dHeight: Number(that.getScale(bgObj, item.dHeight) || 0) || 100, //绘制图像的高度，允许缩放
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sWidth: Number(that.getScale(bgObj, item.sWidth) || 0) || 100, //绘制图像的宽度，允许缩放
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sHeight: Number(that.getScale(bgObj, item.sHeight) || 0) || 100, //绘制图像的高度，允许缩放
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dx: Number(that.getScale(bgObj, item.dx) || 0) || 0, // x轴距离
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dy: Number(that.getScale(bgObj, item.dy) || 0) || 0, // y轴距离
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sx: Number(that.getScale(bgObj, item.sx) || 0) || 0,
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sy: Number(that.getScale(bgObj, item.sy) || 0) || 0,
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[item.circleSet ? 'circleSet' : '']: { //圆形设置
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r: Number(item.circleSet?.r && that.getScale(bgObj, item.circleSet
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.r) || 0),
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x: Number(item.circleSet?.x && that.getScale(bgObj, item.circleSet
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.x) || 0),
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y: Number(item.circleSet?.y && that.getScale(bgObj, item.circleSet
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.y) || 0),
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},
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[item.roundRectSet ? 'roundRectSet' : '']: { //圆角设置
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r: Number(item.roundRectSet?.r && that.getScale(bgObj, item
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.roundRectSet.r) || 0),
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},
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infoCallBack: (imgInfo) => { //回调函数，返回图片信息
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if (item.isBgCenter) {
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return {
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dx: (bgObj.width - item.dWidth) / 2,
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}
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}
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},
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})
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break;
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default:
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_app.log('暂无次类型');
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break;
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}
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})
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return arr
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}
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}
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